N-DBCO-N-bis(PEG2-acid) is a branched click chemistry linker containing a DBCO and two PEG2-acid chains attached to a central nitrogen group. The DBCO group participates in copper-free Click Chemistry reactions with azide. Carboxylic acid (CO2H) allows for reactions with primary amine groups using activators such as EDC or HATU to form a stable bond. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.